CVE-2004-1643

WS_FTP Server 5.0.2 - Authenticated Denial of Service via CD Command Path Traversal

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2004-1643. PoCs published by lion.

AI-analyzed exploit summary This exploit demonstrates a remote denial of service (DoS) vulnerability in WS_FTP Server 5.0.2 by sending a malformed 'cd' command with the path 'a../a', causing the server to crash and close the connection.

Description

WS_FTP 5.0.2 allows remote authenticated users to cause a denial of service (CPU consumption) via a CD command that contains an invalid path with a "../" sequence.

Exploits (1)

exploitdb WORKING POC VERIFIED
by lion · textdoswindows
https://www.exploit-db.com/exploits/24416

This exploit demonstrates a remote denial of service (DoS) vulnerability in WS_FTP Server 5.0.2 by sending a malformed 'cd' command with the path 'a../a', causing the server to crash and close the connection.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: WS_FTP Server 5.0.2
Auth required
Prerequisites: FTP access to the target server · Valid credentials for authentication
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/12406
Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/11065
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/17155
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=109389890712888&w=2

Scores

EPSS 0.0750
EPSS Percentile 93.7%

Details

Status published
Products (1)
progress/ws_ftp_server 5.0.2
Published Aug 29, 2004
Tracked Since Feb 18, 2026